Balluff BUS004C Block-Style PNP Ultrasonic Sensor
A compact Balluff ultrasonic sensor for short-range non-contact object detection.
Product Profile
BUS004C uses ultrasonic measurement to detect objects without relying on optical color contrast. Target geometry, acoustic reflectivity and machine-cycle timing remain important application checks.
Its compact block format and connector orientation must match the installed bracket, cable and controller input.
Technical Data
| Manufacturer | Balluff |
|---|---|
| Model | BUS004C |
| Full Product Name | BUS R06K1-PPX-02/015-S75G |
| Operating Principle | Ultrasonic sensor |
| Housing Style | Block style, right-angle connection |
| Sensing Range | 20 to 250 mm |
| Switching Output | PNP NO/NC |
| Connection | M8×1 male, four-pin |
| Operating Voltage | 20 to 30 VDC |
| Switching Frequency | 25 Hz |
| Repeat Accuracy | ±0.15% of full scale |
| Ambient Temperature | −25 to +70 °C |
| Protection Rating | IP67 |
| Housing Material | ABS |
System Role
- Non-contact ultrasonic sensing for targets whose optical properties may challenge photoelectric sensors.
- Configurable PNP output supports normally-open or normally-closed switching logic.
- Compact block body suits short-range detection points.
- IP67 enclosure supports typical industrial machine environments when correctly connected.
Compatibility
- Confirm a 20–30 VDC supply and a PLC input compatible with PNP switching.
- Match the four-pin M8 cable pinout and right-angle mechanical orientation.
- Do not substitute BUS0049 or BUS0021 without reviewing switching frequency, range and application behavior.
Applications
- Presence and distance-window detection on handling equipment.
- Level or object monitoring within the specified acoustic range.
- Replacement of an identical BUS004C sensor in PNP-input machine wiring.
FAQ
Can BUS004C directly replace a two-wire or NPN sensor?
No. BUS004C uses a PNP switching output and its supply, pinout and PLC input architecture must match.
What target details should be supplied for a BUS004C enquiry?
Provide target material, size, distance, approach direction, cycle rate, mounting space and required NO or NC logic.
Why should nearby ultrasonic sensors be reviewed before fitting BUS004C?
Closely spaced ultrasonic sensors can interfere with one another, so mounting separation and machine timing should be checked.
Does BUS004C require optical contrast from the target?
Ultrasonic detection does not rely on color contrast, but target geometry, angle, material and acoustic reflectivity still affect reliable sensing.
What must be verified after replacing BUS004C?
Check the programmed switching point, NO/NC logic, repeatability, cable sealing and detection across the real production cycle.
Can the Balluff alternatives be used without testing?
No. Even closely related BUS models can differ in range and switching response, so the application and control timing must be validated.
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